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首页> 外文期刊>The journals of gerontology.Series A. Biological sciences and medical sciences >Creating a computer adaptive test version of the late-life function and disability instrument.
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Creating a computer adaptive test version of the late-life function and disability instrument.

机译：创建后期功能和残障仪器的计算机自适应测试版本。

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BACKGROUND: This study applied item response theory (IRT) and computer adaptive testing (CAT) methodologies to develop a prototype function and disability assessment instrument for use in aging research. Herein, we report on the development of the CAT version of the Late-Life Function and Disability Instrument (Late-Life FDI) and evaluate its psychometric properties. METHODS: We used confirmatory factor analysis, IRT methods, validation, and computer simulation analyses of data collected from 671 older adults residing in residential care facilities. We compared accuracy, precision, and sensitivity to change of scores from CAT versions of two Late-Life FDI scales with scores from the fixed-form instrument. Score estimates from the prototype CAT versus the original instrument were compared in a sample of 40 older adults. RESULTS: Distinct function and disability domains were identified within the Late-Life FDI item bank and used to construct two prototype CAT scales. Using retrospective data, scores fromcomputer simulations of the prototype CAT scales were highly correlated with scores from the original instrument. The results of computer simulation, accuracy, precision, and sensitivity to change of the CATs closely approximated those of the fixed-form scales, especially for the 10- or 15-item CAT versions. In the prospective study, each CAT was administered in <3 minutes and CAT scores were highly correlated with scores generated from the original instrument. CONCLUSIONS: CAT scores of the Late-Life FDI were highly comparable to those obtained from the full-length instrument with a small loss in accuracy, precision, and sensitivity to change.
机译：背景：这项研究应用项目反应理论（IRT）和计算机自适应测试（CAT）方法来开发用于衰老研究的原型功能和残疾评估工具。在本文中，我们报告了CAT版本的后期功能和残障工具（Late-Life FDI）的开发情况，并评估了其心理测量特性。方法：我们使用了确认性因素分析，IRT方法，验证和计算机模拟分析，这些数据是从居住在住宅护理设施中的671名老年人收集的数据。我们比较了两种“后期” FDI量表的CAT版本的分数变化的准确性，准确性和敏感性，与固定形式的仪器的分数进行了比较。在40个老年人的样本中比较了原型CAT与原始仪器的得分估计。结果：在后期外国直接投资项目库中确定了不同的功能和残疾域，并用于构建两个原型CAT量表。使用回顾性数据，原型CAT量表的计算机模拟得分与原始仪器的得分高度相关。计算机模拟，准确性，精确度以及对CAT的变化的敏感性的结果非常接近固定形式的刻度，尤其是对于10项或15项CAT版本而言。在前瞻性研究中，每个CAT的执行时间均小于3分钟，并且CAT评分与原始仪器生成的评分高度相关。结论：后期外国直接投资的CAT评分与从全长仪器获得的CAT评分高度可比，但准确性，精确度和变化敏感性损失很小。

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